LGRB-BW KMR50: Former raw material extraction in open pit mining (areas)

In addition to recording the current extraction of raw materials, quarries, clay, clay, sand and gravel pits operated before 1986 are mapped and documented (as well as the areas of existing mining sites released from the concession). These “old excavations” occur particularly frequently in areas with interesting deposits and thus provide important indications of the previous use and quality of the deposit concerned. In addition, it is important to record already dismantled and filled areas as precisely as possible in order to support planning of various types (future raw material extraction, temporary mining for the preservation of monuments, transport infrastructure construction, designation of construction areas, etc.). Old excavations are recorded in an area size of 0.5 ha. A distinction is made between: (3) Former mining area = no longer concessional area in which earlier (also historical) mining was circumvented; it is subdivided into (3a) former mining area, completely mined (no more stocks) (3b) former mining area, not fully mined, but without degraded reserves (3c) former mining area, not fully mined, with still worthy reserves. Stand: Publication of the respective KMR50